[TYPO3-core] FYI: #17178: Rename extension "list" to "recordlist"

[Christian Kuhn]

> there was a complaint of the extension author. It's not published but
> used in several installations.
>
> This is absolutely valid and we are not allowed to use always registered
> keys, but gladly just in time for RC1

It breaks all installations who tried 4.5 before. Accepted for now, but 
that is not a suitable habit from core point of view.

Regards
Christian